Feature: Flexible, wear-resistant, waterproof, safety and practical Quantity: 24 packs Color: yellow/blue/green/red Material: environmental protective PVC Type: side-opening expandable envelopes Dimension: approx. 14x10 inch (36x26 cm) Application: school, business, families, testing, thesis defense... Suitable as a gift for employee benefits, advertising promotions, trade fairs, wedding planning, business gifts, office storage...